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    • 6. 发明授权
    • Method and apparatus to control a step motor of an optical disk driving system
    • 控制光盘驱动系统的步进电动机的方法和装置
    • US07149157B2
    • 2006-12-12
    • US10350179
    • 2003-01-24
    • Yong-seock YoonSoo-yul JungDong-ki Hong
    • Yong-seock YoonSoo-yul JungDong-ki Hong
    • G11B21/08
    • G11B7/08529
    • An apparatus to control a step motor in an optical disk driving system to move a sled which transfers a pickup unit, including a playing unit, a coarse search unit, and a driving unit. The playing unit generates a first step pulse at a first interval of time set by a disk speed according to a comparison between a sled control signal and a tracking driving signal in a playing mode with a predetermined threshold. The coarse search unit generates a second step pulse at a second interval of time stored in a table according to a number of motion steps and a motion direction corresponding to an amount of motion of the pickup unit due to operations in a search mode. The driving unit drives the step motor based on the first and second step pulses.
    • 一种用于控制光盘驱动系统中的步进电机的装置,用于移动传送包括播放单元,粗略搜索单元和驱动单元的拾取单元的滑板。 播放单元根据在具有预定阈值的播放模式中的滑动控制信号和跟踪驱动信号之间的比较,以盘速度设定的第一时间间隔产生第一阶跃脉冲。 粗略搜索单元根据运动步骤的数量和由于搜索模式中的操作而与拾取单元的运动量相对应的运动方向,以存储在表格中的第二时间间隔产生第二步骤脉冲。 驱动单元基于第一和第二步进脉冲驱动步进电机。